Examine source code of JSON Beautifier & Editor

{
  "manifest_version": 3,
  "version": "0.6.6",
  "name": "JSON Beautifier and Editor",
  "description": "__MSG_description__",
  "default_locale": "en",
  "permissions": [
    "storage",
    "contextMenus",
    "scripting"
  ],
  "optional_permissions": [
    "downloads"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "service_worker": "worker.js",
    "scripts": [
      "worker.js"
    ]
  },
  "content_scripts": [
    {
      "run_at": "document_start",
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "data/file.js"
      ]
    }
  ],
  "icons": {
    "16": "data/icons/16.png",
    "32": "data/icons/32.png",
    "48": "data/icons/48.png",
    "64": "data/icons/64.png",
    "128": "data/icons/128.png",
    "256": "data/icons/256.png",
    "512": "data/icons/512.png"
  },
  "homepage_url": "https://webextension.org/listing/json-beautifier.html",
  "web_accessible_resources": [
    {
      "resources": [
        "data/view/json-editor/standalone.js",
        "data/view/loading.svg",
        "data/page/index.html"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "action": {},
  "commands": {
    "_execute_action": {
      "description": "Execute Action"
    }
  },
  "options_ui": {
    "open_in_tab": true,
    "page": "data/options/index.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9616baea-74a5-422d-bbcb-394fcd751bb8}",
      "strict_min_version": "128.0"
    }
  }
}